The Northern Industrial cobalt-coated drill bits are engineered to outlast standard bits. This set includes an extensive range of sizes for a variety of applications. Includes (qty.): 145, Case Included: Yes, Size: Lettera A-Z, Numbers 1-60 (plus 30 replacement bits for 41-60), fractional sizes from 1/16in. to 1/2in., Finish Type: Cobalt Precision-milled 118 point Metal drill index and storage box